Saara Aalto: ABBA’s Winner Takes It All and Diamonds are Forever and Diamonds Are a Girl’s Best Friend (Shirley Bassey / Marilyn Monroe).

5 After Midnight: Mark Ronson’s ‘ Uptown Funk and a mash-up of Sorry and One Dance (Justin Bieber/ Drake)

Louis has picked an all time classic for Saara Aalto – Winner Takes It All, and for her own choice Saara will be singing a Diamonds mash up.

And for Sharon’s Overs, the contestant everyone loves to hate, Honey G, will be performing Can’t Touch This remixed with Super Freak for her first song and a mash up of Salt n Pepa’s Push It with Rae Sremmurd’s Black Beatles for her second song.

How is each theme decided?

In a new twist to this year’s show, the theme of each live show is decided by a spinning jukebox.

Each Sunday, after an act is eliminated, host Dermot O’Leary is joined by a special guest who will spin the jukebox wheel to reveal to the remaining contestants and the viewers at home the following week’s theme.

However speaking on This Morning, Xtra Factor host Rylan was quick to shut down the rumours, admitting producers were desperate to stop it happening. Rylan said: “It’s not fixed! I had executive producer next to me trying to blow it to stop it landing on Fright Night. It’s an empty shell, it’s tacky and tatty!

What themes are remaining?

The first live show kicked off with the theme Express Yourself, before the famous Jukebox came into play, since then, we’ve had Motown, Divas, Fright Night, Disco and Girlbands vs Boybands, Movies and Louis Loves this weekend.

The remaining themes include the 80’s, plus a possible number of surprises.